Improvement in nut-locks



A. G. ISRAEL. Nut-Look.

No. 206,793. Patented Aug. 6.1878.

WITNESSES INVENTOE By ag ww 2W Attorneys rail, and thus be prevented from turning. To q the face of this plate F is pivoted a hook, I, 1n such a manner that when the nut" is screwed UNITED STATES PATENT OFFICE.

ALEXANDER C. ISRAEL, OF KIMMSWICK, MISSOURI.

IMPROVEMENT IN NUT-LOCKS.

Speeilicnl ion forming part of Letters Patent No. 206,793, dated August 6, 187$; application filed April 15, 187s.

To all whom it may concern:

Be it known that I, ALEXANDER (J. ISRAEL, of Kimmswiek, in the county of J eflerson, and in the State of Missouri, have invented certain new and useful Improvements in Railroad Nut-Locks; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters. of reference marked thereon. making a ipflilt of ,this specification.

The nature of my invention consists in the construction and arrangement of a nut-luckin g device which has for its object to prevent nuts on bolts from becoming loose by a succession of jars, such as all bolts and nuts used in bolting together railroad-rails are subjected to.

My invention is particularly adapted for railroad use, butm ay be used to advantage in factories, saw-mills, machine-shops, and various other places.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure 1 is a perspective view of a rail-joint embodying my invention. Fig. 2 is a transverse vertical section of ,the same. Fig. 3 is a cross-section of a plate or washer used.

A A represent the adjoining ends cf wo railroad-rails. B B are the fish-bars C C, he bolts, and D D the nuts. l I

On the end of each bolt 0 next to the fishbar B is placed a plate or washer, F, ,of such size as to fit between the top andffoot ef the up tight the hook can be pressed down over the nut to prevent it from unscrewing and becoming loose.

The plate 1" is formed with a nipple or lug, a, struck up from the plate, by means of which the hook is prevented from rising above the nut by any ordinary jar but whenever the bolt becomes loose by wear or shrinkage the nut can be tightened without removing; or aisin g the hook by hand, as the hook will allow the nut to be turned in the direction to tighten it, but not the other way.

The lug or nipple a is not absolutely necessary, as the weight of the hookhas a tendency to keep it down, and if it should rise to the top of the rail the passing trains would not allow it to rise any higher.

Ido not claim a nut-lock having a thin curved arm pivoted above the nut and an angular baseblock at its lower end adapted to embrace a lower corner of the nut, and having a branch to fit between the lower face of the nut and the upper surface of the flange of the rail, as I am aware that such is not new.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the plate F, provided with the lug a, of the hook I, pivoted to the plate, as shown, and the bolt and nut, whereby the nut is held from unscrewing, but can be tightened oi the bolt without raising the hook by hand, s set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 30th day of March 1878.

ALEXANDER C. ISRAEL.

Witnesses:

E. PEGKI-IAM, G. H. DALLAS. 

